On Wed, 2012-06-27 at 16:14 -0600, Chengyu Fan wrote:
>
>
> On Wed, Jun 27, 2012 at 3:09 PM, Dan Williams <
dcbw redhat com> wrote:
> On Tue, 2012-06-26 at 11:34 -0600, Chengyu Fan wrote:
> > Hi~
> > I want to assign some job to my DHCP client (not just
> configure the
> > network interface). Ex: I let my DHCP client request some
> private
> > options(224-254), if I get those options another program
> should run,
> > otherwise just do the regular IP configuration.
> >
> >
> > But the DHCP client is under the control of NetworkManager.
> Does
> > anyone know that if there is a way to pass a new script to
> the DHCP
> > client in the NetworkManager? Or if I can configure the
> NetworkManager
> > to create a new script?
>
>
> If you have interface-specific options and you're on Fedora,
> you can put
> those options into interface config files,
> eg /etc/dhclient-eth0.conf
> or /etc/dhcp/dhclient-eth0.conf. The other distros, for
> whatever
> reason, don't have interface-specific config files by
> tradition, so you
> all your interfaces have to share the config for your specific
> options.
> That goes in /etc/dhcp/dhclient.conf (Debian, Gentoo)
> or /etc/dhclient.conf (SUSE).
>
> NM reads this file and copies its contents to the actual
> config file it
> sends to dhclient. So feel free to drop your custom 'also
> request'
> stuff and custom 'option' formats there, and NM will use them.
>
> NM will call various scripts called "dispatcher" scripts on
> network
> events, like network up and network down. So if you'd like
> your script
> to run when the network is ready (IP addressing complete) you
> can do
> that, and you'll also get all your DHCP options including the
> private
> ones in the script's environment. See 'man NetworkManager'
> for that.
>
>
> Thanks for your answer.
> I think this is what I need.
>
>
> One more question:
> In DHCP, it is the "script-file" ( which is specified by -sf) to get
> the parameters and commit the actual configuration. I'd like to run my
> script or program after the network is ready, but how can I get the
> new DHCP options in "dispatcher"? Ex: $new_domain_name,
> $new_ip_address, et al.
